8/11/2019 6T30 6T40-45 Rebuilders Kwik Reference Guide_KRG- 6T30 6T40-45
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Rebuilders Kwik
Reference GuideTransmission Type: 6T30/6T40-45
New - 7/2013
Clutch Clearances Adjusted By:Low-Reverse .............................................Not Adjustable
Forward 1-2-3-4.........................................Not Adjustable
Overdrive 4-5-6 .........................................Not Adjustable
Intermediate 2-6 ........................................Not Adjustable
Direct 3-5-R...............................................Not Adjustable
Unit Endplays Location Selective
Torque SpecificationsA/Trans Control Bolt ........................................ 71 Lb. In.
A/Trans Flex Plate Bolt .................................... 45 Lb. Ft.
A/Trans Fluid Pump Bolt to Converter Housing
First Pass............................................... 89 Lb. In.
Final Pass.............................................. 45 Turn
A/Trans Fluid Pump Cover Bolt .......................106 Lb. In.
Control Solenoid Valve Assembly (w/TCM and Body)to Case Bolt M6x97 ............................. 89 Lb. In.
M5x40.5 .......................... 62 Lb. In.
Control Valve Body Assembly (Complete) Bolt 62 Lb. In.
Control Valve Body to Case Bolt
M6x53 ............................. 97 Lb. In.
M6x60 ............................. 97 Lb. In.
Control Valve Body Cover Bolt ........................106 Lb. In.
Torque SpecificationsDrain Plug.................................................................106 Lb. In.
Fluid Level Hole Plug ...............................................106 Lb. In.
Fluid Pressure Test Hole Plug ..................................106 Lb. In.
Front Differential Carrier Baffle Bolt -
Converter Housing ........................................106 Lb. In.
Front Differential Carrier Baffle Bolt - Case..............106 Lb. In.Input Shaft Support Bolt ...........................................106 Lb. In.
Input Speed Sensor Bolt .......................................... 80 Lb. In.
Manual Shift Detent Spring ......................................106 Lb. In.
Output Speed Sensor Bolt........................................ 80 Lb. In.
Torque Converter and Differential Housing Bolt
First Pass ...................................................... 89 Lb. In.
Final Pass...................................................... 50 Turn
N//A
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Rebuilders Kwik
Reference GuideTransmission Type: 6T30/6T40-45
New - 7/2013
Clutch Application
Range
Gear
1 2 3 4 5 6
4-5-6
Clutch
3-5 Rev
Clutch
2-6
Clutch
Low & Rev Clutch
(One Way Clutch)
Low &
Reverse Clutch
1-2-3-4
Clutch
PARK P Applied*
REV R Applied AppliedNEU N Applied
D
1st Braking Holding Applied Applied
1st Holding Applied
2nd Applied Applied
3rd Applied Applied4th Applied Applied
5th Applied Applied
6th Applied Applied
Expected Operating Condition if Component in Column Number is Inoperative
Column # Condition1 No Fourth, Fifth or Sixth Gears
2 No Reverse, No Third or Fifth Gears
3 No Second or Sixth Gears
4 No First Gear
5 No Reverse, No engine braking in First Gear
6 No First, Second, Third or Fourth Gears
*Applied with
no load
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Rebuilders Kwik
Reference GuideTransmission Type: 6T30/6T40-45
New - 7/2013
Solenoid Application
Gear Shift Sol. 11-2-3-4 CL PC
Sol 5 N.L.
2-6 CL PC
Sol 4 N.L.
3-5 Rev CL PC
Sol 2 N. H.
Low Rev 4-5-6 CL
PC Sol 3 N. H.Gear Ratio
PARK ON OFF OFF OFF ON --
REVERSE ON OFF OFF ON ON 2.940
NEUTRAL ON OFF OFF OFF ON --
1ST BRAKING ON ON OFF OFF ON 4.584
1ST OFF ON OFF OFF OFF 4.584
2ND OFF ON ON OFF OFF 2.964
3RD OFF ON OFF ON OFF 1.912
4TH OFF ON OFF OFF ON 1.446
5TH OFF OFF OFF ON ON 1.000
6TH OFF OFF ON OFF ON 0.746
For Shift Solenoid 1, ON = Solenoid Energized (Pressurized) OFF = Solenoid De-energized (No Pressure).
For Pressure Control Solenoids, ON = Pressurized. OFF = No Pressure
Normal resistance Pressure Control Solenoid 3-5 ohms at 70F. Shift solenoid 16-20 ohms at 70F
N.L. = Normally Low
N.H. = Normally High
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Rebuilders Kwik
Reference GuideTransmission Type: 6T30/6T40-45
New - 7/2013
Solenoid Resistance
Solenoid Resistance (at 70F)
Pressure Control Solenoid 3 (Low/Reverse/4-5-6) 3-5 Ohms
Pressure Control Solenoid 2 (3-5-Reverse) 3-5 Ohms
TCC Pressure Control Solenoid 3-5 Ohms
Shift Solenoid 1 16-20 Ohms
Pressure Control Solenoid 5 (1-2-3-4) 3-5 Ohms
Pressure Control Solenoid 4 (2/6) 3-5 Ohms
Line Pressure Control Solenoid 3-5 Ohms
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Rebuilders Kwik
Reference GuideTransmission Type: 6T30/6T40-45
New - 7/2013
Solenoid ID
Component Number
Pressure Control Solenoid 3
(Low/Reverse/4-5-6)1
Pressure Control Solenoid 2 (3-5-Reverse) 2
TCC Pressure Control Solenoid 3
Shift Solenoid 1 4
Pressure Control Solenoid 5 (1-2-3-4) 5
Pressure Control Solenoid 4 (2/6) 6
Line Pressure Control Solenoid 7
Transmission Fluid Pressure Switch
(TFP 2) (3-5-Reverse)8
Transmission Fluid Pressure Switch
(TFP 3) (2/6) 9
Transmission Fluid Pressure Switch
(TFP 1) (1-2-3-4)10
Pass Through Connector 11
Transmission Fluid Pressure Switch
(TFP 4) (Low/Reverse/4-5-6)12
Bottom of Solenoid Assembly
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Rebuilders Kwik
Reference GuideTransmission Type: 6T30/6T40-45
New - 7/2013
Gear Ratio
Gear Ratio
1st/low 4.584:1
2nd 2.964:1
3rd 1.912:1
4th 1.446:1
5th 1:1
6th 0.746:1
Reverse 2.94:1
Effective Final Drive Gear Ratio 2.89/3.17/3.87
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Rebuilders Kwik
Reference GuideTransmission Type: 6T30/6T40-45
New - 7/2013
Line Pressure Information
Gear Line
Pressures at Idle*
P 338-379 kPa (49-55 psi)
R 621-689 kPa (90-100 psi)
N 338-379 kPa (49-55 psi)
D 338-379 kPa (49-55 psi)
L 338-379 kPa (49-55 psi)
Pressure at Wide Open Throttle (WOT) Stall *
P 338-379 kPa (49-55 psi)
R 1,868-2,068 kPa (271-300 psi)
N 338-379 kPa (49-55 psi)
D 1,868-2,068 kPa (271-300 psi)
L 1,868-2,068 kPa (271-300 psi)
*All pressures are approximate
Pressure Tap and Oil Level Plug
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Rebuilders Kwik
Reference GuideTransmission Type: 6T30/6T40-45
New - 7/2013
Connector
Pin Wire Circuit Function
1 0.5 RD/WH 1840 Battery Positive Voltage
2 0.35 BK/WH 451 Ground
3 0.5 D-GN 6307 Clutch Start Neutral Start (PPEI_#3) Signal
4-5 - - Not Used
6 0.35 TN/BK 2500 High Speed GMLAN Serial Data Bus +7 0.35 TN/BK 2500 High Speed GMLAN Serial Data Bus +
8 0.35 TN 2501 High Speed GMLAN Serial Data Bus -
9-11 - - Not Used
12 0.5 PK 2139 Ignition Voltage
13 0.5 D-BU 5985 Serial Data Wake-Up Signal
14 0.35 TN 2501 High Speed GMLAN Serial Data Bus -
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Rebuilders Kwik
Reference GuideTransmission Type: 6T30/6T40-45
New - 7/2013
Valve Body
1 First-Reverse and 4-5-6 Clutch Regulator Valve Train
2 1-2-3-4 Clutch Boost Valve Train
3 1-2-3-4 Clutch Regulator Valve Train
4 2-6 Clutch Regulator Valve Train
5 3-5 Reverse Clutch Regulator Valve Train
6 Clutch Piston Dam Feed Regulator Valve Train
7 TCC Regulator Apply Valve Train
8 Clutch Select Valve Train
9 Actuator Feed Limit Valve Train
10 Manual Valve
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Rebuilders Kwik
Reference GuideTransmission Type: 6T30/6T40-45
New - 7/2013
Checkball Locations
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Rebuilders Kwik
Reference GuideTransmission Type: 6T30/6T40-45
New - 7/2013
Pump
Item Description
300 Torque Converter Fluid Seal Retainer
301 Torque Converter Fluid Seal Assembly
302 A/Trans Fluid Pump Cover Bolt
303 A/Trans Fluid Pump Body
304 Pump Blowoff Ball Valve
305 Pump Blowoff Valve Spring
306 Pressure Regulator Valve Bore Plug Retainer
307 Pressure Regulator Valve Bore Plug
308 Pressure Regulator Valve Spring
309 Pressure Regulator Valve
310 Torque Converter Clutch Blowoff Ball Valve
311 Torque Converter Clutch Blowoff Ball Valve Spring
312 Torque Converter Clutch Control Valve
313 Torque Converter Clutch Control Valve Spring
314 Torque Converter Clutch Control Valve Spring Retainer
315 A/Trans Fluid Pump Drive Gear
316 A/Trans Fluid Pump Driven Gear
317 Cover to Body Locating Pin
318 A/Trans Fluid Pump Cover Assembly
319 Torque Converter Fluid Seal Assembly
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Rebuilders Kwik
Reference GuideTransmission Type: 6T30/6T40-45
New - 7/2013
Bushing/Bearing Locations
Item Description
211Front Differential Carrier
Bearing Assembly AWD Models
223 Drive Sprocket Bearing Assembly
226 Drive Sprocket Thrust Washer
228 Drive Sprocket Bearing Assembly
231Differential Sun Gear to
Differential Housing Bearing Assembly
233 Front Differential Carrier Bearing Assembly
530Reaction Carrier Hub Thrust
Bearing Assembly
5383-5-Reverse and 4-5-6
Clutch Housing Thrust Bearing
556 Output Sun Thrust Bearing Assembly
565Reaction Sun Gear Thrust
Bearing Assembly
568 Input Carrier Thrust Bearing Assembly
569 Input Sun Gear Thrust Bearing Assembly
572 Input Sun Gear Thrust Bearing Assembly
573 Output Carrier Thrust Bearing Assembly
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Rebuilders Kwik
Reference GuideTransmission Type: 6T30/6T40-45
New - 7/2013
Air Test
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Rebuilders Kwik
Reference GuideTransmission Type: 6T30/6T40-45
New - 7/2013
Technical Tips for Rebuilding this unit
Drain Plug
The drain plug is located on the lower automatictransmission case assembly.
It is installed vertically on the lowest point of the
transmisison.
When removing the drain plug, approximately 50%
of the fluid will drain.
Drain plugs require no sealant, but they must be torqued
to specification.
NOTE TORQUE CONVERTER FAILURECOULD CAUSE LOSS OF DRIVEGEAR AND/OR LOSS OF POWER
Be sure to install the converter in a straight up and down
position to avoid damage to the internal seal.
Do not over-tighten the lift tools because the torque
converter may become damaged.
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Rebuilders Kwik
Reference GuideTransmission Type: 6T30/6T40-45
New - 7/2013
Technical Tips for Rebuilding this unit
Fluid Level Control Valve (Inside Transmission) Fluid Level Control Valve (Outside Transmission)
The Fluid Level Control valve is designed to control the fluid level in the case by trapping oil in the Control Valve Body Cover
Assembly.
It reacts to temperature changes in the fluid to OPEN or CLOSE a fluid passage.
At low temperatures the control valve allows fluid to drain into the sump - 60C (140F) or below.
Above 60C, the fluid will remain in the valve body cover not allowing it to drain back into the case.
As the temperature increases, the passage gets blocked, trapping fluid in the valve body cover.
The trapped fluid helps to maintain the proper level in the valve body cover for proper operation of the hydraulic system in the
transmission.
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Rebuilders Kwik
Reference GuideTransmission Type: 6T30/6T40-45
New - 7/2013
Technical Tips for Rebuilding this unit
Output Speed Sensors (OSS)
possiblecable
crushed
possible
cable
crushed
Input Speed Sensors (ISS)
Manual Shift Detent w/Shaft
Position Switch Lever Assembly
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